ISSN Print 2713-0878   
					ISSN Online 2713-0886				
				
				
				BIOMEDICAL JOURNAL OF ERMC EASTERN EUROPEAN
			
			Burdenko Voronezh State Medical University, Voronezh, Russia
Correspondence should be addressed: Alexander S. Kopylov
 Studencheskaya, 10, Voronezh, 394036, Russia: ur.xednay@volypok.ainas 
Author contribution: Kopylov AS — study planning, literature analysis, data collection; Popov VI — data analysis and interpretation, manuscript drafting.